Model
552BA
Measurements Using a
Pl
ane
Mirr
or Interferom
ete
r
D-4
Reflectance: 98% at 633 nm
at
normal
in
cidence.
Fl
atness: Flatness devia
ti
ons
will
appear as measureme
nt
errors when the
mk
·
ror
Is
scanned p
er
pe
ndi
cu
la
r to the beam.
Th
e r
eco
mmended range
is
1/4 wavelength to '
/20
wavelength
(0
.16 to 0.03 micron
s,
6 to 1.2
ml
cro
in
ches).
Optica
l Surface
Qua
lity: 60·40
per
Mi
l 0·13830.
Th
e
HP
107
33A
Flatn
ess Mirror m
ee
ts th
ese
specification
s.
OPTIONAL
HARDWAR
E
Optional hardwar
e,
shown
In
Figure
(j
·
2,
can
be
connected to your
la
ser Measurement
Sys
tem
to allow measurements to be
made
more accurately.
REFER
EN
CE
MATERIAL
Se
tup
of
the
laser Head and Tripod
Turn·
on
.....
.
Techniques (general)
Section 4 Interconnections
Section 5 Alignment
.........
Section 1S
SETIING
5508A
M EAS
UR
E
MENT
DISPLAY INTERNAL SWITCH
The
HP
5508A Measurement Display normally uses the
HP
l
D766A
linear Interferometer
for
di
stan
ce
and velocity measurements.
To
gel the co
rr
ect measurement
di
splayed when us
ing
the I-
IP
lD
7D6A
Plane Mirror
In
terreromeler, a s
wit
ch selling
in
the
HP
5508A must be changed.
To
se
llh
e Measurement Display
co
rr
ec
tl
y for use with the plane mirror interferometer:
1.
Set
th
e front panel
LINE
swi
tch to
OFF.
2. Disconnect the line cord
at
the rear
of
Ih
e unit.
3.
Us
in
g a
POSIDRIV
scr
ew
drive
r,
loosen the screw al the rear of the top cove
r.
4, Slide the top cover rearward and remove it.
Figure
0 ·2 shows the location and pr
ope
r setting of
th
e
A2S3
TE
ST
SW
IT
CH
for
use
wi
th Ihe
plane mirror
Int
erlerometer,
For
normal operatlon, that
Is
for
use with the linear
int
erferometer,
set
the
swi
tch to
all
zeros,
5,
Set
the
TEST
SW
IT
CH to the setting shown
in
Figure
0 ·
2,
6,
Replace the
top
cover ilnd
fa
sten the screw al the rear of
Ih
e top cover.
7.
Conn
ec
t the line cord
althe
r
ea
r of
th
e
unit.
8,
When ready to use the system, turn the
LIN
E switch
ON
.
SERIES 2732A
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